1. You should launch 'X Terminal' and execute this command:

$ ls -l /usr/lib/librtcom-call-ui.so.0

In output there should be something like:

lrwxrwxrwx 1 root root 25 Jun 27 02:58 /usr/lib/librtcom-call-ui.so.0 -> librtcom-call-ui.so.0.0.0

If you see that and still have those pop-ups then the trouble is somewhere else.

2. If instead of that you see something like:

lrwxrwxrwx 1 root root 25 Jun 27 02:58 /usr/lib/librtcom-call-ui.so.0 -> librtcom-call-ui.so.0.0.0.orig

Then that link should be changed.

3. To do so get root shell:

$ sudo gainroot

4. And then execute this command:

# ln -fs /usr/lib/librtcom-call-ui.so.0.0.0 /usr/lib/librtcom-call-ui.so.0

Then make sure that link was corrected using that ls -l command from the step 1.

5. As far as I understand that library sits in memory, so your changes will come into effect only after reboot.